1、 毕业 设计 外文资料翻译 题 目 POLISHING OF CERAMIC TILES 抛光瓷砖 学 院 材料科学与工程 专 业 复合材料与工程 班 级 复材 0802 学 生 窦文杰 学 号 20080103114 指导教师 邵明梁 二一 二 年 三 月 二十八 日 济南大学毕业 设计外文资料翻译 - 2 - MATERIALS AND MANUFACTURING PROCESSES, 17(3), 401413 (2002) POLISHING OF CERAMIC TILES C. Y. Wang,* X. Wei, and H. Yuan Institute of Manufactu
2、ring Technology, Guangdong University ofTechnology, Guangzhou 510090, P.R. China ABSTRACT Grinding and polishing are important steps in the production of decorative vitreous ceramic tiles. Different combinations of finishing wheels and polishing wheels are tested to optimize their selection. The res
3、ults show that the surface glossiness depends not only on the surface quality before machining, but also on the characteristics of the ceramic tiles as well as the performance of grinding and polishing wheels. The performance of the polishing wheel is the key for a good final surface quality. The su
4、rface glossiness after finishing must be above 208 in order to get higher polishing quality because finishing will limit the maximum surface glossiness by polishing. The optimized combination of grinding and polishing wheels for all the steps will achieve shorter machining times and better surface q
5、uality. No obvious relationships are found between the hardness of ceramic tiles and surface quality or the wear of grinding wheels； therefore, the hardness of the ceramic tile cannot be used for evaluating its machinability. Key Words: Ceramic tiles； Grinding wheel； Polishing wheel 济南大学毕业 设计外文资料翻译
6、- 3 - INTRODUCTION Ceramic tiles are the common decoration material for floors and walls of hotel, office, and family buildings. Nowadays, polished vitreous ceramic tiles are more popular as decoration material than general vitreous ceramic tiles as they can *Corresponding author. E-mail: 401 Copyr
7、ight q 2002 by Marcel Dekker, Inc. have a beautiful gloss on different colors. Grinding and polishing of ceramic tiles play an important role in the surface quality, cost, and productivity of ceramic tiles manufactured for decoration. The grinding and polishing of ceramic tiles are carried out in o
8、ne pass through polishing production line with many different grinding wheels or by multi passes on a polishing machine, where different grinding wheels are used. Most factories utilize the grinding methods similar to those used for stone machining although the machining of stone is different from t
9、hat of ceramic tiles. Vitreous ceramic tiles are thin, usually 58mm in thickness, and are a sintered material,which possess high hardness, wear resistance, and brittleness. In general, the sintering process causes surface deformation in the tiles. In themachining process, the ceramic tiles are unfix
10、ed and put on tables. These characteristics will cause easy breakage and lower surface quality if grinding wheel or grinding parameters are unsuitable. To meet the needs of ceramic tiles machining, the machinery, grinding parameters (pressure, feed speed, etc.), and grinding wheels (type and mesh si
11、ze of abrasive, bond, structure of grinding wheel, etc.) must be optimized. Previous works have been reported in the field of grinding ceramic and stone1 4. Only a few reports have mentioned ceramic tile machining5 8, where the grinding mechanism of ceramic tiles by scratching and grinding was studi
12、ed. It was pointed out that the grinding mechanism of ceramic tiles is similar to that of other brittle materials. For vitreous ceramic tiles, removing the plastic deformation grooves, craters (pores), and cracks are of major concern, which depends on the micro-structure of the ceramic tile, the cho
13、ice of grinding wheel and processing parameters, etc. The residual cracks generated during sintering and rough grinding processes, as well as thermal impact cracks caused by the transformation of quartz crystalline phases are the main reasons of tile breakage during processing. Surface roughness Ra
14、and glossiness are different measurements of the surface quality. It is suggested that the surface roughness can be used to control the surface quality of rough grinding and semi-finish grinding processes, and the surface glossiness to assess the quality of finishing and polishing processes. The characteristics of the
